Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0976cf2d28f4a6…

MALICIOUS

PDF

71.9 KB Created: 2021-03-31 23:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 178f09c5650089f179811a0a0dacc5bc SHA-1: 6a7dd03ca47fe627b1969ab2a1b404048daf573f SHA-256: bf0976cf2d28f4a60432e82ed38a9aef68f4ac7dff3710231000d2008210ed6a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. The document body, though heavily obfuscated, suggests a lure related to consumer electronics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://resalured.ru/strik?utm_term=how+to+charge+beats+solo+2 PDF link annotation
    • http://bejugofixo.22web.org/magnetic_current_book.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/i8AGgiB/dragon_battle_games_download.pdfIn PDF document text
    • http://gejobukopap.iblogger.org/14305394686.pdfIn PDF document text
    • https://cdn.sqhk.co/vudupapuj/ha5IjeK/elements_and_principles_of_art_and_design.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/ijxf8gh/48754339187.pdfIn PDF document text
    • http://wixupuzi.22web.org/pavug.pdfIn PDF document text
    • http://vumexovuvelafe.medianewsonline.com/learning_and_development_cipd.pdfIn PDF document text
    • http://fukuzowi.sportsontheweb.net/pagalapux.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/dopomi.pdfIn PDF document text
    • https://cdn.sqhk.co/sejiragidu/Cofihjg/donivetitovusumejo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/944b7e6d-bbc3-4454-8102-8fca139f0b20/how_to_connect_my_fintie_keyboard_to_my_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6273aa7e-a898-4fdc-8caa-85b39c07ed36/tazijuloregotemanoredij.pdfIn PDF document text
    • https://s3.amazonaws.com/rizoli/how_much_is_an_autocad_course.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/16176408634.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/48399235918.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/94912393430.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/fulab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a56e5aa-7277-4949-89fc-353e4cdd95a3/30572091833.pdfIn PDF document text
    • http://pexirud.onlinewebshop.net/basic_camera_angles.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/vatejukulajovuta.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/chicken_invaders_4_full_crack_android.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD27 5020 bytes
SHA-256: be4712d8e1a13c655194bffe88efaeff7caf530c95c50ec30b685d02ce9d7057
font_01_sfnt_off0000de5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5F 10632 bytes
SHA-256: 8906045357838b8d2bed37c5f37377c218642367285fac7367a86b054c307843
font_02_sfnt_off000102ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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